<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>table</title>
</head>
<!--
tr 行
列  td
-->
<body>
<table border="1px">
<tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
    <td>4</td>
</tr>
    <tr>
<!--        跨列 左右-->
        <td colspan="4">1-1</td>
        <td>1-2</td>
        <td>1-3</td>
        <td>1-4</td>
    </tr>
    <tr>
<!--        rowspan跨行 上下-->
        <td rowspan="4">2-1</td>
        <td>2-2</td>
        <td>2-3</td>
        <td>2-4</td>
    </tr>
    <tr>
        <td>3-1</td>
        <td>3-2</td>
        <td>3-3</td>
    </tr>
</table>
</body>
</html>